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  The Triple Alliance was the military alliance between Germany, Austria-Hungary, and Italy.
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  The Alliance formed Great Britain, France and Russia after the signing a pact.
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  The act that sent Europe into World War I
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  The Battle of the Marne was a First World War battle fought between 5 and 12 September 1914
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  A Passenger ship carrying U.S. Citizens was sunk by a German submarine. This act sent USA into the war.
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  This battle was fought between the German and French armies, from 21 February-18 December 1916, on hilly terrain north of the city of Verdun-sur-Meuse in north-eastern France.
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  Woodrow Wilson Declares War on Germany.
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  The Treaty of Brest-Litovsk was a peace treaty signed on March 3, 1918, at Brest-Litovsk